Tolerate a null parent pointer.

llvm-svn: 116533
2010-10-14 22:55:57 +00:00 · 2010-10-14 22:55:57 +00:00 · 31a01ee3cb
parent 8f92f0a35c
commit 31a01ee3cb
1 changed files with 1 additions and 1 deletions
--- a/llvm/lib/Analysis/TypeBasedAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/TypeBasedAliasAnalysis.cpp
@ -52,7 +52,7 @@ namespace {
    TBAANode getParent() const {
      if (Node->getNumOperands() < 2)
        return TBAANode();
-      MDNode *P = dyn_cast<MDNode>(Node->getOperand(1));
+      MDNode *P = dyn_cast_or_null<MDNode>(Node->getOperand(1));
      if (!P)
        return TBAANode();
      // Ok, this node has a valid parent. Return it.